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Σάββατο 7 Οκτωβρίου 2017

RNA-seq analysis of Lgr6+ stem cells and identification of an Lgr6 isoform

Abstract

We studied Lgr6+ stem cells in experimental UV carcinogenesis in hairless mice. For further characterisation through RNA-seq, these stem cells were isolated by FACS from transgenic hairless mice bearing an EGFP-Ires-CreERT2 reporter cassette inserted into exon-1 of the Lgr6 gene (purity confirmed by human ERT2 expression). Between Lgr6/EGFP+ and Lgr6/EGFP basal cells (Tg/wt) 682 RNAs were differentially expressed, indicating stemness and expression of cancer-related pathways in Lgr6/EGFP+ cells. We discovered that suspected 'Lgr6 null' mice (Tg/Tg) expressed RNA of an Lgr6 isoform (delta-Lgr6, lacking 74 N-terminal aa) which could be functional and explain the lack of a phenotype.

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